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| Content Provider | IET Digital Library |
|---|---|
| Author | Lv, Jie Song, Wenji Lin, Shili Feng, Ziping Ding, Yulong Li, Yongliang |
| Abstract | Lithium batteries must be connected in series to achieve large capacity and high-power output. Battery management system (BMS), which is designed to protect battery pack from damage and increase battery life, is important in electrical power system. The present equalisation techniques have many disadvantages: The passive balancing wastes energy and generates heat, while active balancing is complex. This study proposes an intelligent BMS with dynamic equalisation (DBMS) which contains active and passive balancing circuit independently per cell. Experimental results indicate that DBMS can reduce the inconsistency among cells. Moreover, the DBMS can assist battery stack to store and release more energy. Besides, the battery stack with DBMS gives an energy efficiency of 96.5% which is 7.7% higher than that without balancing. In addition, the battery stack with DBMS can reduce the maximum state of charge difference of cells from 10.415% to 4.51% after three charge–discharge cycles. What is more, the DBMS is simple and can decrease the auxiliary power level and the system heat. Such a DBMS will help us to provide a high-performance battery pack. |
| Starting Page | 388 |
| Ending Page | 394 |
| Page Count | 7 |
| ISSN | 1751858X |
| Volume Number | 11 |
| e-ISSN | 17518598 |
| Issue Number | Issue 4, Jul (2017) |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/iet-cds/11/4 |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/iet-cds.2016.0213 |
| Journal | IET Circuits, Devices & Systems |
| Publisher Date | 2016-12-15 |
| Access Restriction | Open |
| Rights Holder | © The Institution of Engineering and Technology |
| Subject Keyword | Active Balancing Circuit Auxiliary Power Level Battery Life Battery Management System Battery Stack Charge-discharge Cycles Dynamic Equalisation Performance Efficiency 96.5 Percent Electrical Power System Energy Conservation Energy Efficiency Energy Utilisation Heat Generation Lithium Lithium Battery Pack Management Passive Balancing Circuit Passive Balancing Wastes Energy Primary Cell |
| Content Type | Text |
| Resource Type | Article |
| Subject | Control and Systems Engineering Electrical and Electronic Engineering |
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